Ruffling and stitching machine.



A. H. DE VOE. RUFIE'LING AND STITOHING MACHINE.- APPLICATION FILED AUG.a, 1900.

' Patented Apr. 18, 1911.

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ATTORNEY rm-r NoRms PETERS can, WASHIHGTUN, n. c.

A. H. DE VOE. RUPFLING AND STITOHING MACHINE.

' APPLICATION FILED AUG. 8, 1908.

Patented Apr. 18, 1911.

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RUFPLING AND. STITGHING MACHINE.

APPLICATION FILED AUG. 8, 1908. I

1 989,579., ,1 Patented Apr. 18, 1911.

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INVENTOR 1 www ATTORNEY nu: NORRIS PETERS co.. WASHINGTON, 11. c4

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ALBERT H. DEVOE, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO THE SllZNG-ERMANU- FACTURING COMPANY, A CORPORATION OF NEW JERSEY.

RUFFLING AND STITCHING MACHINE.

Specification of Letters Patent.

Patented Apr. 18, 1911.

Application filed August 8, 1908. Serial No. 447,506.

To all whom it may concern:

Be it known that I, ALBERT H. DEVOE, a citizen of the United States,residing at Elizabeth, in the county of Union and State of New Jersey,have invented certain new and useful Improvements in RufHing andStitching Machines, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention has for its principal object the provision of a sewingmachine in which superposed layers or plies of material are presented tothe stitch-forming mechanism by upper and lower feeding members, one ofwhich latter is automatically controlled to vary the speed of movementof the ply of material which it engages in relation to that engaged bythe other feeding member, where by one of such plies is fulled orgathered as it is stitched to the other ply.

The invention has for its further objectthe provision of a stitching andruffling or gathering machine for operation upon articles of irregularshapes, such as Japanese tabis, of which the component parts are simplein construction and effective in arrangement for the performance oftheir several functions, while the machine as a whole is compact andeasily handled.

The invention consists in the various constructive features herein shownand described and set forth in the appended claims.

In the accompanying drawings, Figure 1 is a front side elevation of amachine embodying the present improvements, Fig. 2 a rear sideelevation, partly in section, of the same, Fig. 3 a sectional plan ofthe machine taken in a plane slightly above the top of the bed-plate,Fig. 4 a-front end view of the machine with the face plate of thebracketarm removed, and Fig. 5 a transverse sectional elevation of themachine, taken in a plane rearward of the stitch-forming mechanism andlooking backwardly.- Fig. 6 is a perspective view representing the upperfeeding mechanism and its controlling means, the upper feeding memberbeing shown in its relation to the presser-foot of special form and theneedle. Figs. 7 and 8 are perspective views showing respectively theupper and lower sides of the throat-plate with the edge-gage carriedthereby, and Fig. 8 is an edge view of the edge-gage and its carrier,with the throat-plate indicated in dotted lines. Figs. 9 and 10 areperspective views showing in detail certain portions of the mechanismfor alternating the lift of the presser-foot and upper feeding member,and Fig. 11 a similar View of the upper feed controlling cam clutchmechanism. Fig. 12 shows a detail of the mechanism.

The present improvement constitutes a modification of the ruffling andstitching machine forming the subject of my pending United States patentapplication Ser. No. 416,444, filed February 18, 1908, but is shownembodied in a flat-bed machine of which the frame comprises thebed-plate l and the bracket-arm including the upright columnar portion 2and horizontal arm In the bracket-arm is journaled the longitudinallyextending main-shaft 4 carrying at its rearward end the balance wheel 5and belt-pulley 6.

The main-shaft carries at its forward end the usual crank-plate 7 havinga crank-pin embraced by one end of a pitman 8 whose opposite endembraces a lateral pin upon a collar 9 fixed upon the needle-bar 1Ojournaled in the forward end of the bracket-arm and carrying a needle11. The link take-up 12, actuated from an offset crank carried by theneedle-bar actuating crank-pin, is of well-known construction andoperation.

The loop-taker, which carries the usual bobbin case 13, is of thewell-known Singer oscillating shuttle pe, and derives its oscillatorymovements rom a driver mounted upon the oscillating haft 14 providedwith a crank 15 having a pin 16 carrying a slideblock 17 embraced by theslide-way 18 of a forked arm 19 upon a rocker 2O journaled upon a pin 21mounted in the machine frame, said rocker being provided with a lateralarm 22 pivotally connected with the lower end of a pitman-rod 23 whoseupper end embraces the actuating crank 24 formed in the main-shaft 4.

The lower or primary feed-clog 25 is mounted upon the usual feed-bar 26having its rearward end pivotally connected with spaced upright arms 27carried by the feed rock-shaft 28 provided in its rearward end portionwith a lateral crank-arm 29 which is pivotally connected with the lowerend of a link-bar 30 having at its upper end the yoke 31 embracing ablock 32 fitted upon the feedactuating eccentric 33 on the main-shaft 4.The link-bar 30 is mounted adjacent its yoke 31 upon a fulcrum-stud 34carried by a swinging link 35 which is itself fulcrumed upon a screw-pin36 carried by the depending arm 37 of an angle-lever pivotally mountedby means of the screw-stud 38 upon the bracket-arm and having a lateralarm 39 passing through a slot 40 in the side of the columnar port-ion 2of the bracket-arm and carrying a thumb-screw ll by which suchfeed-regulating angle-lever may be shifted to determine the position ofthe supporting stud 36 of the fulcrum-carrying link 35. in effecting thedesired up-and-down movement of the link-bar 30 to produce the desireddegree of oscillation of the feed rock-shaft 23, and hence the operativemovement of the feed-dog 25. The means for producing and controlling theextent of oscillatory movements of the feed rock-shaft above describedis that of many of the machines of the well-known Singer type, as shownand described in the United States patent to L. B. Miller and P. DiehlNo, 229,629, of July 6, 1880.

The feed-bar 26 is forked at the opposite end from its connection withthe feed rockshaft to embrace a stud 42 upon the lateral arm #13 of thefeed-lifting rock-shaft 441 having upon its rearward end portion alateral arm 15 with yoke 4-6 embracing a feed-lifting cam 17 upon thesluittle-actuating rockshaft 14.

The upper feeding member comprises a bifurcated foot portion &8 havingdownturned hooked forward ends 49 secured to the bottom of a block 50having a vertically slotted socket entered by the lower end of the upperfeed-bar 51 secured therein by means of the fastening screw 52. Meansare provided for alternately lifting from contact with the work thefeeding foot 48 and the presser-foot 53 which is provided in its underface with a transverse notch or recess 54 rearward of its needle-hole55, the shank 56 of the presser-foot being secured in a manner wellknownto the lower end of the presser-bar 57, upon the upper end portion ofwhich is fixed the collar 58 having a lateral roller-stud 59 engaged bythe free end of a fiat pressure spring 60 having its opposite endsecured upon the bearing lug 61 upon the bracket-arm 3 with its intermediate portion disposed beneath the lug 62 through which passes thepressure adjusting screw 63 with set-nut 64. The presserbar is alsoprovided with a fixed collar 65 having a projecting finger 66 adaptedfor engagement by a rod 67 carried by the forward end of thepresser-lifting rock-lever 68 fulcrumed upon the screw-stud 69 upon thebracket-arm and having its opposite end connected with a treadleactuated rod 70. The finger 66 is also adapted for engagement by the camportion 71 of the fingerlever 72 fulcrumed at 73 adjacent thepresser-bar for lifting the same by hand.

Fixed adjustably upon the presser-bar 57 is still another split collar7% having a rigid rearwardly projecting arm 75 forked at its outer endto embrace the upper end of a link 76 pivotally connected therewith bymeans of a pin 77 and having its lower end similarly pivoted by means ofthe pin 78 within theforked outer end of a cross-bar 79 fulcrumed bymeans of a screw-pin 80 to the laterally extending upper end of theupper feed-bar 51. The cross-bar 79 is attached transversely to aslide-block 81 having a slideway 82 fitted to and embracing the crossbar83 fixed upon one end of the rock-shaft 8 1- which is journaled in thehead of the bracket-arm and is provided at its opposite end with a yoke85 embracing a cam 86 upon the main-shaft 4 adjacent the crank-plate 7.As will be observed, the rocking of the cross-bar 83 by means of the cam86 causes corresponding movements of the slideblock 81 and its cross-bar79 which acts through the connecting link 76 to alternately drawtogether and separate the collar 7 1 and fulcrum-stud 80 so as to changethe height of the feeding foot relatively to the presser-foot and thusproduce the alternate action of said members on the work. By forming asliding connection between the tilting cross-bar 79 and its actuatingrockshaft 84, it is evident that the presser-foot and upper feedingmember may be raised from engagement with the work by the rock- 'lever68 or the cam-lever 72, and that these members are permitted toaccommodate themselves to any variations in thickness of the materialoperated upon.

The block 50 is provided with a rearward extension 87 having atransverse aperture entered by a lateral pin 88 upon the bottom of aslide-rod 89 which is slidingly fitted within a socket 90 upon the lowerend of a depending crank-arm 91 which is mounted upon the forward end ofthe actuating rockshaft 92 mounted parallel with the mainshaft insuitable bearings in the bracketarm. Upon the rearward end of thisrockshaft mounted a depending arm 93 having upon the forward side of itslower por tion the parallel wings 95 forming a guideway for aslide-block 95 pivotally mounted upon a transverse-pin 96 carried by thelower end of a pit-man-rod 97 whose upper end is formed with a strap 98embracing an actuating eccentric 99 upon the main-shaft. The oppositeend of the pin 96 carries a second slide-block 100 fitted to a guide-wayformed intermediate the wings 101 of a guide-block 102 mounted upon therearward end of a rock-shaft 103. As will be observed, the pitman-rod 97makes one reciprocation for each rotation of the main-shaft i, and thelateral motion communicated thereto for swinging the depending arm 93 ofthe upper feed-actuating rock-shaft 92 is determined by the angularrelation of the guide-block 102 to the main-shaft.

As in my prior application Serial No. 416,444, above mentioned, therock-shaft- 103 is provided upon its forward end with a crank-arm 104formed with a. longitudinal slot 105 in which are fitted the reducedinner portions of a pair of clamp-blocks 106 connected by means of aclamp-screw 107 with the inner end entering an aperture in a slide-block108 fitted to a corre sponding slot 109 in a lateral arm 110 of anangular lever mounted upon the fulcrumpin 111 and having an upwardlyextending arm 112 which carries at its upper end a screw-stud 113, theinner end of which is preferably surrounded by a roller entering agroove 114 in the controlling cam-disk 115. Unlike the mechanism of mysaid former application, the crank-arm 104 is loosely mounted upon therock-shaft 103, but is adjust-ably secured to a flange 117 of a collar116 fixed upon said rock-shaft, said flange having a segmental slot 118entered by the shank of a. clamp-screw 119 tapped into a suitablythreaded aperture in the arm 104.

It will be observed that in its step-bystep rotary motion, thecam-groove 114 of the cam-disk 115 acts upon the roller-stud 113 to rockthe angular lever 110 112, the lateral arm of which communicates throughthe adjustable connection comprising the blocks 106 108 and screw 107 avibratory movement to the crank-arm 104 which imparts to the guide-block102 through the shaft 103 rocking movements serving to vary its angularrelation with the mainshaft, whereby the amplitude of swinging movementsof the arm 93 is varied, as before described. As will be readily seen,the adjustment of the clamp-blocks 106 within the slot 105 of the arm104 toward and from the roclr shaft 103 adjusts the relative rockingmovement communicated to the guide-block 102 from the vibrating arm 110for regulation of the degree of oscillation of the rock-shaft 92 and theconsequent operative or feeding movement of the upper feeding member.

The cam-disk 115 is carried by a. short shaft 120 mounted upon thecolumnar portion 2 of the bracket-arm, and its rearward face is providedwith an annular flange 121 embraced by the spaced and similarly curvedjaws 122 at the free end of the curved clutch-lever 123 having itsopposite end pivotally connected by means of a pin 124 with one arm 125of an operating lever having a boss 126 fitted loosely upon the shaft120 and provided with an oppositely extending arm 127 formed with alateral lug 128 having a socket in which is seated one end of a spring129 with its opposite end fitted within a similar socket of a laterallug 130 upon the clutch-lever 123, whereby the pivotally connectedmembers are forced slightly apart to cause the jaws 122 to assume aslightly eccentric relation to the flange 121 to produce av crampingact-ion thereon in a well known manner. The leverarm 125 is formed withan angular extension arm 131 projecting upwardly from the pivotal pin124 and provided with a boss 132 to which is pivotally connected bymeans of the pin 133 one end of a connecting rod 134 whose opposite endis provided with a strap 135 embracing an adjustable eccentric 136 uponthe main-shaft.

As shown and described more fully in my application Serial N 0. 416,444,the eccentric 136 has an elongated aperture 137 embracing themain-shaft, and is carried by a slide plate 138 which is fitted to atransverse guide-way in a fixed collar 139 upon the main-shaft, atransverse adjusting screw 140 intermediate the slide-plate 138 andcollar serving to shift the eccentric 136 upon the main-shaft 4 to varythe action of the eccentric upon the lever 125 127 through the rod 134.It is evident that the yielding action of the spring 129 in theoscillation of the levers 125 127 and 123 causes a cramping action ofthe jaws 122 upon the flange 85 in one direction and the release ofthesame in moving in the opposite di rection, whereby the cam receives astepbystep rotary motion in one direction only, which acts through itsconnections with the guide-arm 102 to cause the variable operation ofthe feeding foot 48 during the combined stitching and gathering orfalling action of the machine.

To insure against retrograde motion in the downward movement of theoperating lever, the cam is provided with the usual peripheral groove inwhich is arranged the encircling band 141 whose opposite ends are formedwith eyes entered and fastened adjustably to a fiXed abutment of thesewing machine frame by a. screw 142, as shown in dotted lines in Fig.5.

Adjacent the outer jaw 122 of the lever 1 3 is journaled transverselytherein a rocking pin 143 which carries at one end a clutch-releasingfinger 144 normally resting in contact with the adjacent end of thecontact-screw 145 mounted in a lug 146 at the end of the lever-arm 127and provided with a lock-nut 147 to maintain it in fixed adjustment inthe threaded aperture of said lug 146. The tripping finger 148 upon theopposite end of the pin 143, lies in the path of movement of a lateralpin or roller-stud 149 carried by the depending tripping lever 150fulcrumed upon the screw-stud 113 carried by the vibrating lever-arm1.12, said tripping lever having a second laterally projectingroller-stud 151 entering a transverse slot 152 in the lever-arm 112against the rearward end of which said roller-stud is normallymaintained seated by means of a flat spring 153 secured by means of afastening screw 154 to the edge of the lever-arm 112 and bearing upon apin 155 carried by the tripping lever 150. As the lever-arm 112 movesoutwardly to the extreme outer points of the cam-groove 114, it carriesthe tripping lever 150 with it to cause the rollerstud 149 to approachthe adjacent edge of the tripping finger 148. The parts are so arrangedand proportioned that in the extreme outer position of the lever-arm112, the tripping lever 150 does not necessarily carry the roller-stud149 into operative engagement with the tripping finger 148 so as to turnthe rock-shaft 143 sufliciently to discontinue the operation of theclutch-levers 123 and 127 for interruption of the rotation of thecam-wheel 115; this action being produced only when the lower end of thetripping lever is forcibly held outwardly from its carrying lever 112,by means presently to be described, so as to bring the roller-stud 149in opposition to the spring 153 beyond its normal position in relationto the leverarm 112.

To adapt the machine for gathering or pulling an upper ply of material,a longitudinally extending separator-plate 156 is provided having aforwardly extending offset operative end 157 formed with the usualsharpened edge with needle-receiving notch, the separator-plate havingsecured thereto by means of suitable fastening screws a block formedwith a tongue 158 pivotally secured by means of a pin 158 between spacedlugs of a block 159 secured upon the flat carrying bar 159 which is ofangular form with offset forward portion 160, such bar being pivoted bymeans of the stud-screw 161 to the free end of a swinging lever 162whose opposite end is fulcrumed upon a stud-screw 163 near the rearwardedge of the bed-plate 1. To maintain a fixed relation between the plate156 and the carrying bar 159, while permitting the former to rise andfall freely when in operation the bar is provided with a screw-pin 164entering an aperture in the plate 156 and serving to steady the latter.A spring 163 encircling the stud-screw 161 and having one arm attachedto the lever 162 and the other arm inserted in a suitable aperture inthe bar 159 is provided to induce a tendency of the rearward end of thecarrying bar 159 to approach the fulcrum-screw 163, which action isprevented by the provision of a fixed screw-stud 165 upon the bed-platewhich is normally engaged by a lateral notch 166 in a longitudinaltapering slot 167 in the adjacent portion of the bar 159, which not onlyprevents the swinging of the bar 159 upon its fulcrum 161, but detainsthe same from retrograde movement in relation to the stitchl l l 1forming mechanism and longitudinally of the bed-plate from the full lineposition of Fig. 3 to the dotted line position which is permitted totake place when the bar 159 is given a slight lateral motion by theoperator to disengage its notch 166 from the fixed stud 165.

Mounted upon a fixed fulcrum-stud 168 near the front edge of thebed-plate is a cam-lever 169 having in its outer end a transverse camprojection 170 with its upper face beveled toward the fulcrum-pin 168, alateral notch or recess 171 being provided in such cam-lever adjacentits transverse cam projection, which latter is normally maintainedacross the path of movement of the correspondingly beveled lowerextremity 150 of the tripping lever 150 by means of a spring 172interposed between a lateral lug 173 upon the lever 169 and an adjacentfixed shoulder provided upon the washer 174. Slightly beyond the forwardend of the slot 167 the separator-plate carrying bar 159 is providedwith a cam-piece 175 secured thereon by means of fastening screws 176and provided wit-h a beveled cam projection 177 similar in form to thecross-section of the cam projection 170 of the lever 169, but ofslightly less thickness, so that when such parts are abutted togetherthe cam-member 170 affords a slight shoulder above the top of thecam-member 177.

The parts are so proportioned that when the higher cam-member 170 isdisplaced from its normal position in the path of movement of theextremity 150 of the lever 150, the clutch mechanism may be 1naintainedinoperative through the engagement of the part 150 of the tripping leverwith the lower cam-member 177, the retraction of which from beneath thelever 150 permits the latter to move freely with the lever-arm 112,while the lever 169 is detained from as suming normal operative positionby engagement of the extremity of its cam-member 17 O with the side ofthe tripping lever. As the lever-arm 112 moves inward toward the shaft120, however, the tripping lever is disengaged from the cam-member 170and the lever 169, under the action of the spring 172, is caused'toassume its operative position across the path of movement of thetripping lever 150.

In the ordinary use of the machine, the arm 104 is so adjusted upon itsrock-shaft 103 that when the roller-stud 113 is at one of the extremeouter positions of the camgroove 114 in the cam-disk 115 the upper feedrock-shaft 92 will receive from its actuating eccentric 99 suchmovements that the upper feeding member 48 will have the same throw asthelower feeding member 25, whereby the upper and lower plies of materialwill be advanced equally; and the separatonplate being in theretracted position represented in dotted lines in Fig. 3, its campr0jection'177 retains the cammed lower extremity 150 of the trippinglever 150 in extended relation with its carrying leverarm 112 so thatthe tripping stud 149 rests in forcible engagement with the finger 148whereby the clutchactuating mechanism of the pattern-cam 115 is heldinactive and the cam remains at rest.

In the retracted position of the bar 159, the cam projection 177 abutsagainst the ad jacent extremity of the cam-member 170 of the lever 169and maintains the same displaced from normal operative position in whichit extends partially across the path of lateral movement of the cammedextremity 150 of the lever 150. When the operator shifts theseparator-plate forwardly, the stud 165 bears against the straight edgeof the cam-slot 167 of the bar 159 so as. to guide the operative edge ofthe separator-plate transverselyofthe feed and in advance of theneedle-path until the stud reaches the pocket or notch 166 in thecam-slot, when the separator-plate is permitted under the action of itsspring to advance so that its notch embraces the needle-path, asindicated by the full line position represented in Fig. 3. In themovement of the bar 159 from retracted to operative position, thecam-piece 175 is withdrawn from contact with the end of the cam-member170, thus permitting the lever 169 to advance the end of the cam-.

member 170 until the movement of the latter is checked by its engagementwith the side of the lower end of the lever 150 depending slightly belowthe top of the same. The lever 150 is thus relieved from the detaininginfluence of the cam-member 177, and is also unrestrained by thecam-member 170, and is thus permitted to return to initial relation withits carrying lever-arm 112, whereby its tripping stud 149 is withdrawnfrom operative engagement with the finger 148 of the clutchreleasingdevice to restore the action of the cam-driving mechanism. As therotation of the cam thus restored causes the movement of the lever-arm112 toward its axis of rotation, the cammed lower extremity 150 of thetripping lever 150 swings upwardly about the fulcrum-pin 111 as an axisand releases the cam portion 170 of the lever 169, which latter is thuspermitted to move under the action of its returning spring 172 intoinitial operative relation across the path of movement of the extremity150 of the tripping lever.

As the roller-stud 113 arrives at the succeeding high point or outerposition of the cam-groove 114, the lower extremity of the trippinglever 150 returns toward its initial position, but its engagement withthe beveled upper face of the cam portion 170 of the lever 169 causes itto move outwardly slightly in opposition to its spring 153 while itsfulcrum-pin 113 continues to move laterally, whereby the tripping stud149 is thrown forcibly into contact with the finger 148 of theclutch-releasing device, and the controlling cam is brought to rest andthe upper and lower feeding members are restored to initial relation inwhich they move in unison. The separator-plate 156 is now forciblyretracted by the operator into the dotted line position of Fig. 3,wherein the operative portion of the cam-member 170 is displaced by thecam-member 177 carried by the bar 159, and the machine is thus set inreadiness for a succeeding rutliing or gathering operation.

For convenience in retracting the camlever 169 from operative toinoperative position with the tripping lever 150 when required while thecarrying bar 159 is not in retracted position, a stud-pin 178 is appliedto such lever to be grasped by the fingers of the operator in movingsuch lever.

In order to turn the cam-wheel 115 by hand when desired, a lever 179 isprovided with a lateral notch 180 fitted to the annular flange 121 ofthe cam-Wheel and provided with a flat spring 181 secured thereto bymeans of screws 182 with its slightly upturned free end resting upon theperiphery of said flange, a check piece 183 being secured to the side ofsuch lever by means of screws 184 and adapted to engage the oppositeedge of the cam-wheel to maintain the lever 179 thereon. As will beobserved, in the normal rotation of the cam-wheel the lever 179 iscarried into contact with the clutch-lever arm 127 against which itrests idly in the movement of said cam, but when moved forwardly it iscaused to grip the cam and pressure by the operator in the clirection ofthe clutch-lever arm 127 causes a cramping action thereon which impartsthe desired rotation to the cam-wheel.

In operation upon tabis, requiring the stitching along the adjacentconvergent edges of the curved toe portions, it is impracticable toemploy an edge-gage, although it is desirable to employ edge-guidingmeans to insure uniform spacing of the stitching along the edges inother portions of the article, and I have therefore provided thethroat-plate 185 with a receding edge-gage for the purpose. Adjacent andat one side of the usual feed-openings 186 and the needle-hole 187 inthe throat-plate is disposed a slot 188 parallel with the feed-openingsand through which projects an upturned guide-lip 1'89 upon the plate 190which is set in a transverse channel 191 formed in the bottom of thethroat-plate and rigidly secured to the transverse outer portion of anarm 192 having a transversely disposed opposite end 193 journaled in abearing rib 194 of a block 195 set in a second transverse channel 196formed in the bottom of the throat-plate and secured therein so as to beadjustable transversely of the direction of feed by means of thefastening screw 197 entering the slot 198 in the throat-plate; the block195 having also secured thereto by means of the screws 199 one end of afiat spring 200 whose opposite end extends beneath the plate 190 andmaintains the same yieldingly seated within the channel 191 with theguide-lip 189 extended slightly above the surface of the throat-plate toafi'ord an edge-gage for the work. As will be observed, the forward edge1S9 of the guide-lip is slightly beveled so that when portions of thearticle operated upon which extend across the stitch-line come incontact with the forward end of the guide-lip they will depress the samein opposition to the spring 200, and the article may therefore be guidedindependently thereof until a free edge of the article is againpresented to the stitching devices, when the guide-lip returns tooperative relation with the work.

In the initial position of the various parts of the machine, the needle,presser-foot and feeding foot or upper feeding member are raised, theseparator-plate is retracted as indicated in dotted lines in Fig. 3, andthe vibrating lever 112 of the upper feed-controlling mechanism is inits extreme position in front of the cam-shaft 120 to which it iscarried by engagement of its rollerstud with one of the outer points ofthe CZLHL groove 114. \Vhile the initial lengths of feed of the lower orprimary feeding member and the upper or secondary feeding member maybear any suitable relation, depending upon the class of work to beperformed, in the stitching of tabis the arm 104: is secured in suchposition of adjustment in relation to the collar 116, by means of thescrew 119, that the upper feeding member normally receives operativemovements not only concurrent with but equal to those of the lowerfeeding member, whereby the upper and lower plies of material arenormally propelled at the same speed, the edge of the lower and heavierply being fed to the stitchforming and feeding mechanisms in c011- tactwith the edge-guide 189. When the toe portion of the article is reachedthe separator-plate 156 is thrown forwardly and guided by means of thefixed pin 165 and cam-slot 167 into a position intern'iediate thesuperposed plies of material and between the upper and lower feedingmembers, with its needle-receiving notch in register with theneedle-path, which causes the withdrawal of the cam projection 177 fromengagement with the tripping lever 150 whereby the tripping finger 148is released and the actuating clutch thrown into operation so as tocause the forward movement of the pattern-cam wheel 115.

The cam-groove 114: is so formed that the parts intermediate its outeror high points produce, through the rocking pins 111 and 103 and theirconnections, a gradual tilting to-and-fro of the guide-member 102, whichcauses a gradual increase and subsequent decrease of the feeding orwork-advancing movements of the upper feeding member in rounding thedivided toe portions of the article. As the stitching approaches theinner end of the slit between the two portions of the tabi, the beveledforward edge of the edge-guide 189 is engaged thereby and the guidedepressed while the work continues to move, the upper feed accelerationproduced by the pattern-cam having in the meantime been interrupted bythe disengagement of the actuating clutch through the tripping mechanismbrought into operation by the outward movement of the vibrating lever112. At the time the acceleration of the upper feeding member ceases,the separator-plate is manually disengaged from its holding means andallowed to be retracted under the action of its spring 163 intoinoperative position indicated in dotted lines in Fig. 3, its cam member177 displacing the cam-member 170 carried by the spring pressedcam-lever 169 without materially affecting the position of the trippinglever 150 whose lower end alternately bears against the same while theclutch is held inactive. As the stitching continues, and a free edge is-presented to the edge-guide 189, the latter again rises into operativeposition to insure the proper spacing of the line of stitching from theedge of the sole portion of the article.

The actuating mechanism of the feeding foot 48 is so adjusted that whenthe feeding movement of said member exceeds that of the primary feedingmember the downturned hooked forward ends or claws 49 engage the upperply of fabric in advance of the needle and deposit the slack thus formedbeneath the arched portion of the presserfoot 53 and rearward of theneedle, whereby the slack portion of the goods is not penetrated by theneedle but is embraced between successive punctures thereof and is heldin such position by the intervening threads of the same.

As will be observed, the offset or arched form of the separator-plate atthe side of the stitching and feeding mechanisms af fords clearance forthe work in stitching certain classes of articles, while the hinging ofthe separator-plate horizontally upon its carrying bar 159 permits thesame to rise and fall freely in the operation of the machine andespecially in its introduction between the partially stitched plies ofmaterial adjacent the parts to be gathered or fulled. By maintaining theedge-guide 189 upon a yielding carrier 192, such guide is not onlyadapted to accommodate itself to the form of the article to be stitched,as before described, but accommodates itself to the thickness of thelower ply of material beneath the superposed operative portion of theseparator-plate, which latter serves an additional function as apressure plate to receive the downward thrust of the claws 49 of theupper feeding member in maintaining the necessary pressure of the lowerply of material upon the feed-dog 25.

The feeding foot 4:8 is preferably formed of a thin elastic plate, andthe bifurcation of the forward portion of the same forms twowork-engaging members which are thus relatively yielding and adapted toclosely conform with the work operated upon.

lVhile the several parts of the present improvement are shown anddescribed herein in the specific forms and constructions which areprovided for the work for which the present improvement has beenespecially designed, it is to be understood that the ma chine issusceptible of modification to a very considerable degree withoutdeparture from the present invention.

Having thus set forth the nature of the invention, what I claim hereinis 1. In a sewing machine, the combination with an upper feeding memberand a lower feeding member, and actuating means whereby feedingmovements are simultaneously imparted to said members throughout theoperation of the machine, of controlling means whereby the relativeoperation of said feeding members is varied, and automatically actingmeans for interrupting the movement of said controlling means.

2. In a sewing machine, the combination with opposed upper and lowerfeeding members, and actuating means therefor, of a separator-plateadapted for introduction intermediate said feeding members but normallyretracted therefrom, controlling means including a pattern-cam for theactuating means for one of said feeding members, operating means forsaid pattern-cam including a clutch-device, means connected with saidseparator-plate and acting upon said clutch in establishing the rotationof said pattern-cam, and means acting upon the clutch for interruptingthe movement of the pattern-cam.

3. In a sewing machine, the combination with opposed upper and lowerfeeding members, and actuating means therefor. of a separator-plateadapted for introduction in termediate said feeding members but normallyretracted therefrom, controlling means including a pattern-cam for theactuating means for one of said feeding members, operating means forsaid pattern-cam in cluding a clutch-device, means connected with saidsepaator-plate and acting upon said clutch in establishing the rotationof said pattern-cam, andautomat-ically acting means connected with saidclutch-device for interrupting the movement of the patterncam.

a. In a sewing machine, the combination with upper and lower feedingmembers and actuating means therefor, of controlling means whereby theaction of one of said feeding members is varied in relation to the otherand comprising a pattern-cam wheel formed with an annular flange, aclutchlever provided with spaced cramping jaws embracing said flange, arock-lever to which said clutch-lever is pivotally connected, means foryieldingly maintaining said levers in fixed relation, means foractuating said rock-lever, and means for varying the relation of saidrock-lever and clutchlever for throwin the latter into and out ofoperative relation with the pattern-cam wheel.

5. In a sewing machine, the combination with upper and lower feedingmembers and actuating means therefor, of controlling means whereby theaction of one of said feeding members is varied in relation to the otherand comprising a pattern-cam wheel formed with an annular flange, aclutchlever provided with spaced cramping jaws embracing said flange, arock-lever to which said clutch-lever is pivotally connected, means foryielding-1y maintaining said levers in fixed relation, automaticallyacting means for shifting the relation of said rock-lever andclutch-lever to render the latter inoperative, and manually actuatedmeans for reestablishing the operative relation of said clutch-leverwith the rock-lever.

6. In a sewing machine, the combination with upper and lower feedingmembers and actuating means therefor, of controlling means whereby theaction of one of said feeding members is varied in relation to the otherand comprising a pattern-cam wheel formed with an annular flange, avibrating lever receiving its operative movements from said pattern-cam,a clutch-lever pro vided with spaced cramping jaws embracing saidflange, a rock-lever to which said clutch-lever is pivotally connected,means for yieldingly maintaining said levers in fixed relation, meansfor actuating said rocklever, a tripping device carried by one of saidlevers and adapted to shift the one in relation to the other, a trippinglever pivotally mounted upon the cam-actuated vibrating lever andprovided with a stud adapted to operatively engage and actuate saidtripping device, and an independently and movably mounted fulcrum pointadapted to engage said tripping lever and support the same in itsengagement of such tripping device.

7. In a sewing machine, the combination with upper and lower feedingmembers and actuating means therefor, of controlling means whereby theaction of one of said feeding members is varied in relation to the otherand comprising a pattern-cam wheel, a vibrating lever receiving itsoperative movements from said pattern-cam wheel, a clutch-deviceoperatively connected with said pattern-am wheel, and incli'lding aclutch-lever by means of which driving relation is established andinterrupted between said clutch-device and pattern-cam wheel, means foractuating the clutch-lever to impart operative movements to thepattern-cam wheel, a tripping device adapted to shift said lever intoinoperative relation with the interengaging parts of the clutch, atripping lever pivotally mounted upon the cam-actuated vibrating leverand adapted to engage said tripping device, and means for locking saidtripping lever from movement upon its supporting vibrating lever and forreleasing the same to permit such relative movement.

8. In a sewing machine, the combination with upper and lower feedingmembers and actuating means therefor, of controlling means whereby theaction of one of said feeding members is varied in relation to the otherand comprising a pattern-cam wheel, a vibrating lever receiving itsoperative movements from said pattern-cam wheel, a clutch-device 0peratively connected with said pattern-cam wheel and including aclutchlever by means of which driving relation is established andinterrupted between said clutch-device and pattern-cam wheel, means foractuating the clutch-lever to impart operative movements to thepattern-cam wheel, a tripping device adapted to shift said lever intoinoperative relation with the interengaging parts of the clutch, atripping lever pivotally mounted upon the camactuated vibrating leverand adapted to engage said tripping device. automatically acting meansfor locking said tripping lever from HIOVQll'lOllt upon its supportingvibrating lever, and. manually operated means for releasing the same topermit such relative movement.

f). In a sewing machine, the combination with upper and lower feedingmembers and actuating means therefor, of controlling means whereby theaction of one of said feeding members is varied in relation to the otherand comprising a patterircam wheel formed wit-h an annular flange, avibrating lever receiving its operative movements from said pattern-camwheel, a clutch-lever provided with spaced cramping jaws embracing saidfiange. a roclclever to which said clutch-lever is pivotally connected,means for yieldingly maintaining said levers in fixed relation, meansfor actuating said rook-lever, a tripping device carried by one of saidlevers and including a rocking pin carryiiig a releasing linger forengagement with the other of said levers and a tripping finger, atripping lever pivotally mounted upon the cam-actuated vibrating leverand adapted to engage said tripping finger, and means for locking saidtripping lever from movement upon its supporting vibrating lever and forreleasing the same to permit such relative movement.

10. In a sewing machine, the combination with upper and lower feedingmembers and actuating means therefor, of controlling means whereby theaction of one of said feeding members is varied in relation to the otherand comprising a pattern-cam wheel formed with an annular flange, avibrating lever receiving its operative movements from said pattern-camwheel, a clutchlever provided with spaced cramping jaws embracing saidflange, a rock-lever to which said clutch-lever. is pivotally connected,means for yieldingly maintaining said levers in fixed relation, meansfor actuating said rock-lever, a tripping device carried by one of said.levers and including a rocking pin carrying a releasing finger and atripping finger, an adjustable contact pin arried by the other of saidlevers and adapted to engage said releasing linger upon the rocking pin,a tripping lever pivotal y mounted upon the cam-actuated vibrating leverand adapted to engage said tripping finger. and means for locking saidtripping lever from movement upon its supporting vibrating lever and forreleasing the same to permit such relative movement. 7

11. In a sewing machine, the combination with a primary feeding memberand means for actuating the same, of a secondary feeding member, anactuating rock-shaft, an operative connection intermediate saidrockshat't and the secondary feeding member, a swinging arm upon saidrock-shaft, a reciprocating and laterally moving actuating member havinga sliding connection with said swinging arm, a guide-member normallystationary with relation to said actnating member and with which thelatter is also movably connected, and means for varying the angularrelation of said guide-member with the swinging arm of said rockshaft.

19. In a sewing machine, the combination with a primary feeding memberand means for actuating the same. of a secondary feeding member, anactuating rook-shaft, an op crative connection intermediate saidrockshaft and the secondary feeding member, a swinging arm upon saidrock-shaft, a re ciprocating and laterally moving actuating memberhaving a sliding connection with said swinging arm, a pivotally mountedguide-member with which said actuating member is also slidinglyconnected, and means for varying the angular relation of saidguide-mei'nber with the swinging arm of said rock-shaft.

13. In a sewing machine, the combination with a primary feeding memberand means for actuating the same, of a secondary feeding member, anactuating rock-shaft, an operative connection intermediate saidrockshaft and the secondary feeding member, a swinging arm upon saidrock-shaft provided with a slideway, a reciprocating and laterallymoving actuating member, slide-blocks *arried by said actuating memberone of which is fitted to the slideway in said swinging crank-arm, apivotally mounted guidemember formed with a slideway fitted to the otherof said slide-blocks, and means for varying the angular relation of saidguidemember with the swinging arm of said rockshaft.

14. In a sewing machine, the combination with a primary feeding memberand means for actuating the same, of a secondary feeding member, anactuating rock-shaft, an op erative connection intermediate saidrockshaft and the secondary feeding member, a swinging arm upon saidrock-shaft, a reciprocating and laterally moving actuating member havinga movable connection with said swinging arm, a guide-member normallystationary with relation to said actuating member and with which thelatter is also movably connected, and means for adjusting the initialrelation of said guidemember with the swinging arm of said rockshaft.

15. In a sewing machine, the combination with a primary feeding memberand means for actuating the same, of a secondary feeding member, anactuating rock-shaft, an operative connection intermediate saidrockshaft and the secondary feeding member, a swinging arm upon saidroclrshaft, a reciprocating and laterally moving actuating member havinga movable connection with said swinging arm, a pivotally mountedguide-member with which said actuating member is also movably connected,means for adjusting the initial relation of said guide-member with theswinging arm of said rock-shaft, and means for varying the angularrelation of said guideanember in relation to its initial position.

16. In a sewing machine, the combination with a primary feeding memberand means for actuating the same, of a secondary feeding member, meansfor raising and lowering the secondary feeding member, an actuatingrock-shaft, a crank-arm on said rock-shaft, a sliding pivotal connectionintermediate said crank-arm and the secondary feeding member, and meansfor actuating said rockshaft.

17. In a sewing machine, the combination with a primary feeding memberand means for actuating the same, of a secondary feeding member, meansfor raising and lowering the secondary feeding member, an actuatingrock-shaft, a crankarm on said rock-shaft provided with a radial socket,a slide-rod pivotally connected to the secondary feeding member andfitted to said socket of the crank-arm, and means for actuating saidrock-shaft.

18. In a sewing machine, the combination with stitclrforming mechanismincluding a reciprocating needle, a primary feeding member and means foractuating the same, of a resser-foot with arched under or operativeface, a secondary feeding member bifurcated to embrace said presser-footand provided with downturned work-engaging claws at opposite sides ofthe same, and actuating means from which the claws of the secondaryfeeding member derive operative movements from a point in advance of theneedle to a position adjacent the arch of said resser-foot.

19. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, a primary feeding member and means foractuating the same, of a presserfoot with arched under or operative faceand a needle-hole disposed substantially in advance of the arch therein,a secondary feeding member bifurcated to embrace said presser-foot andprovided with downturned work-engaging claws at opposite sides of thesame, and actuating means from which the claws of the secondary feedingmember derive operative movements from a point in advance of the needleto a position adjacent the arch of said presserfoot.

20. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, a primary feeding member and means foractuating the same, of -a presser-foot with arched under or operativeface, a secondary feeding member having a yieldingly sustaineddownturned workengaging claw, and actuating means for said clawincluding a vertically swinging bar carrying said claw and having afulcrum disposed rearwardly of the needle-path, and operating meansconnected therewith below said fulcrum, whereby the claw of thesecondary feeding member derives operative movements from a point inadvance of the needle to a position adjacent the arch of saidpresser-foot.

21. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, a primary feeding member and means foractuating the same, of a presser-foot with arched under or operativeface and a needle-hole disposed substantially in advance of the archtherein, a secondary feeding member bifurcated to embrace saidpresser-foot and provided with independently yielding downturne'dworkengaging claws at opposite sides of the same, and actuating meansfrom which the claws of the secondary feeding member derive operativemovements from a point in advance of the needle to a position adjacentthe arch of said presser-foot.

22. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, a primary feeding member and means foractuating the same, of a presser-foot formed rearward of the needle-pathwith an arch in its operative face, a secondary feeding member havingdownturned work-engaging claws, actuating means from which the claws ofthe second ary feeding member derive operative movements from a point inadvance of the needle to a position adjacent the arch of said presserfoot, and a separator-plate intermediate the primary and secondaryfeeding members, and movable into and out of operative relation with thefeed members both within and transversely of the direction of feed.

28. In a sewing machine, the combination with stitclrforming mechanismincluding a reciprocating needle, a primary feeding member and means foractuating the same, of a presser-foot formed rearward of the needle-pathwith an arch in its operative face, a secondary feeding member havingdownturned work-engaging claws, actuating means from which the claws ofthe secondary feeding member derive operative movements from a point inadvance of the needle to a position adjacent the arch of saidpresser-foot, means for varying the extent of the operative movements ofthe second ary' feeding member while the machine is in operation, and aseparator-plate intermediate the primary and secondary feeding members.V

24, In a sewing machine, the combination with a primary feeding memberand means for actuating the same, of a secondary feed ing member opposedto the primary feeding member, a feed-bar to which the same is attached,means operatively connected with the actuating means of the primaryfeeding member for imparting operative or feeding movements to saidsecondary feeding member, a presser-foot adjacent the secondary feedingmember, a presser-bar to which the same is attached, means foryieldingly forcing the presser-bar toward the primary feeding member, arocker upon which said feedbar isfulcrumed to swing, a connectionbetween said rocker and the presser-bar, and an actuator havin a slidingconnection with said rocker and adapted to impart rocking movementsthereto.

25 In a sewing machine, the combination with a primary feeding memberand means for actuating the same, of a secondary feeding member opposedto the primary feeding member, a feed-bar to which the. same isattached, means for imparting operative or feeding movements to saidsecondary feeding member, a presser-foot adjacent the secondary feedingmember, a presser-bar to which the same is attached, means foryieldingly forcing the presser-bar toward the primary feeding member, arearwardly projecting arm rigidly secured upon the presserbar, a rocker,a pivotal connection between said rigid arm and the rocker, a fulcrumupon said rocker upon which said feed-bar is mounted to swing, and anactuator having a sliding connection with said rocker and adapted toimpart rocking movements thereto.

26. In a sewing machine, the combination with a primary feeding memberand means for actuating the same, of a secondary feeding member opposedto the primary feeding member, a feed-bar to which the same is attached,means for imparting operative or feeding movements to said secondaryfeeding member, a presser-foot adjacent the sec ondary feeding member, apresser-bar to which the same is attached, means for yield ingly forcingthe presser-bar toward the primary feeding member, a rocker comprising aslide-block and a cross-bar overlying the same, pivotal connectionsintermediate the crossbar at opposite sides of said slideblock and thepresser-bar and feed-bar respectively, and an actuator having aguidemember embracing said guide-block and movable thereon across saidcross-bar and adapted to impart operative movements to said rocker.

27. In a sewing machine, the combination with a primary feeding memberand means for actuating the same, of a secondary feed ing member opposedto the primary feeding member, a feed-bar to which the same is attached,means for imparting operative or feeding movements to said secondaryfeeding member, a presser-foot adjacent said secondary feeding member, apresser-bar to which thesame is attached, a lateral arm fixed upon saidpresser-bar, means for yieldingly forcing the presser-bar toward theprimary feeding member, a rocker comprising a slide-block and across-bar, a pivotal connection intermediate the feed-bar and saidcross-bar at one side of the slide-block, a link connection intermediatesaid cross-bar at the opposite side of said slide-block and the lateralarm of said presser-bar, and an actuator having a member movably fittedto said slide-block and adapted to impart operative movements to saidrocker.

28. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, opposed upper and lower feedingmembers, and actuating means whereby differential operative movementsmay be imparted to said feeding members, of a separato1.'-plate, aswinging lever to which the same is pivotally attached, a latorallymovable fulcrum for said lever and means for guiding saidseparator-plate into operative position intermediate said feedingmembers and in advance of the stitch-forming mechanism.

29. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, opposed upper and lower feedingmembers, and actuating means whereby differential operative movementsmay be imparted to said feeding members, of a separator-plate formedwith an operative edge provided with a needle-receiving notch, aswinging lever with which the same is pivotally connected, a laterallymovable fulcrum upon which said lever is mounted for movement of theseparator-plate both in and transversely of the direction of feed, andmeans applied to and adapted for controlling the swinging movements ofsaid lever and the oscillation of the separator-plate thereon wherebythe latter is guided into operative position intermediate said feedingmembers with its notch embracing the needle-path.

30. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, opposed upper and lower feedingmembers, and actuating means whereby difierential operative movementsmay be imparted to said feeding members, of a separator-plate, aswinging lever with which the same is pivotally connected, a carryingmember for said separator-plate provided with a cam-slot, and a fixedstud entering said cam-slot and cooperating therewith in guiding theseparator-plate to and from operative position intermediate the feedingmembers.

31. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, opposed upper and lower feedingmembers, and actuating means whereby differential operative movementsmay be imparted to said feeding members, of a separator-plate formedwith an operative edge provided with a needle-receiving notch, aswinging lever with which the same is pivotally connected, a carryingmember for said separator-plate provided with a camslot having anoperative edge substantially parallel with the operative edge of theseparator-plate and a lateral recess substan tially parallel with theneedle-receiving notch of the latter, and a fixed stud entering saidcam-slot and cooperating therewith in guiding the separatonplate toand'from operative position intermediate the feeding members.

32. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, opposed upper and lower feedingmembers, and actuating means whereby differential operative movementsmay be imparted to said feeding members,

of a separator-plate formed with an operative edge provided with aneedle-receiving notch, a swinging lever with which the same ispivotally connected, a carrying member for said separator-plate providedwith a cam-slot, having an operative edge substantially parallel withthe operative edge of the separator-plate and a lateral recesssubstantially parallel with the needle-receiving notch of the latter, afixed stud entering said cam-slot and cooperating therewith in guidingthe separator-plate to and from operative position intermediate thefeeding members, and a spring interposed between said swinging lever andthe separator-plate for maintaining the latter yieldingly in operativeposition with the fixed stud in the lateral recess of said cam-slot.

83. In a sewing machine, the combination with stitch-forming mechanism,opposed upper and lower feeding members, and actuating means wherebydifferential operative movements may be imparted to said feedingmembers, of a separator-plate with its operative portion adapted forintroduction between said feeding members and its adjacent portionextended laterally of the direction of feed and offset above the same.

34:. In a sewing machine, the combination with stitch-forming mechanism,opposed upper and lower feeding members, and actuating means wherebydifferential operative movements may be imparted to said feedingmembers, of a separator-plate with its operative portion adapted forintroduction between said feeding members, a carrying bar therefor, alaterally movable fulcrum for said carrying bar and a horizontal pivotalconnection intermediate said carrying bar and the separator-platewhereby the latter is adapted to freely rise and fall with the feedingmembers.

35. In a sewing machine, the combination with a stitchforming mechanism,a throatplate provided with a feed aperture and an adjacent guideaperture, opposed upper and lower feeding members, and actuating meanswhereby differential operative movements may be imparted to said feedingmembers, of an edge-guide within the aperture therefor in saidthroatplate and normally extending above the latter, and a yieldingcarrier for said edge-guide disposed beneath the throat-plate.

36. In a sewing machine, the combination with stitch-forming mechanism,a throatplate provided with a feed aperture and an adjacent guideaperture, opposed upper and lower feeding members, and actuating meanswhereby differential operative movements may be imparted to said feedingmembers, of an edge-guide within the aperture therefor in saidthroat-plate and normally extending above the latter, a yielding carrierfor said edge-guide disposed beneath the throat-plate, and aseparator-plate interposed between said feeding members and overlyingthe top of said edge-guide.

37. In a sewing machine, the combination with stitch-forming mechanism,a throatplate provided with a feed aperture and an adjacent guideaperture, opposed upper and lower feeding members, and actuating meanswhereby differential operative movements may be imparted to said feedingmembers, of an edge-guide within the aperture therefor in saidthroat-plate and normally extending above the latter, a verticallyswinging carrier for said edge-guide, a spring for yieldinglymaintaining said carrier in raised position with the edge-guide abovethe face of the throat-plate, and a separator-plate interposed betweensaid feeding members.

38. In a sewing machine, the combination with stitch-forming mechanism,a throatplate provided with a feed aperture and an adjacent guideaperture, opposed upper and lowerfeeding' members, and actuating meanswhereby differential operative movements may be imparted to said feedingmembers, of an edge-guide within the aperture there for in saidthroat-plate and normally extending above the latter, a yielding andlaterally adjustable carrier for said edge-guide,

and a separator-plate interposed between said feeding members.

In testimony whereof, I have signed my name to this'specification, inthe presence of two subscribing witnesses.

ALBERT H. DEVOE. Witnesses D. P. 1311mm, H. J. MILLER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

